EP 3828414 A4 20220504 - PUMP
Title (en)
PUMP
Title (de)
PUMPE
Title (fr)
POMPE
Publication
Application
Priority
- JP 2018221450 A 20181127
- JP 2019046176 W 20191126
Abstract (en)
[origin: EP3828414A1] The present invention includes: a vibrating plate having a piezoelectric body connected to a first main surface thereof; a cover including a top plate that faces a second main surface of the vibrating plate, which is on the opposite side from the first main surface, and that has an opening part, and a side wall that is connected to an outer peripheral portion of the top plate so as to surround a space between the top plate and the vibrating plate; a support portion that is connected to the side wall and supports an outer periphery of the vibrating plate; an opening that is formed between the side wall and the vibrating plate; and a protrusion that is provided on any one out of the top plate, the side wall, and the vibrating plate so as to protrude into the space. The protrusion is provided between the opening part of the top plate and the side wall in a cross section viewed in a direction perpendicular to a direction in which a main surface of the top plate and the second main surface of the vibrating plate face each other.
IPC 8 full level
F04B 43/02 (2006.01); F04B 43/04 (2006.01); F04B 45/04 (2006.01); F04B 45/047 (2006.01)
CPC (source: EP US)
F04B 43/0054 (2013.01 - EP); F04B 43/046 (2013.01 - EP US); F04B 45/045 (2013.01 - US); F04B 45/047 (2013.01 - EP US); H10N 30/20 (2023.02 - US)
Citation (search report)
- [YA] US 9631730 B2 20170425 - KOTANI KENICHI [JP], et al
- [YA] US 2014294629 A1 20141002 - KIM SANG JIN [KR], et al
- [A] CN 107781144 A 20180309 - UNIV CHANGCHUN TECHNOLOGY
- [A] US 5171132 A 19921215 - MIYAZAKI HAJIME [JP], et al
- See also references of WO 2020111063A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
EP 3828414 A1 20210602; EP 3828414 A4 20220504; CN 112752906 A 20210504; CN 112752906 B 20230418; JP 7047937 B2 20220405; JP WO2020111063 A1 20210927; US 11879449 B2 20240123; US 2021277883 A1 20210909; WO 2020111063 A1 20200604
DOCDB simple family (application)
EP 19888722 A 20191126; CN 201980063012 A 20191126; JP 2019046176 W 20191126; JP 2020557737 A 20191126; US 202117329684 A 20210525